Fountain-pen.



PATENTED JULY 5, 1904.

A. EBBRSTBIN.

FOUNTAIN PEN.

APPLIUATION FILED APR. 21, 1904.

N0 MODEL.

ing my improvements applied thereto,

iran STaTEs Patented July 5, 19042 PATENT Creme.

`AUGUST EBERSTEIN, OF WINTHROP, MASSACHUSETTS, ASSIGNOR (.)F UNE-HALFT() CHARLES BRANDT, 0F BUSTON, MASSACHUSETTS.

FOUNTAIN-PEN..

SPECXFICATION forming part of Letters Patent No. 764,227, dated July 5,1904.

Application filed Apri121, 1904.

To ati/Z whom it may concern:

Be it known that I, AUGUST EBERSTEIN, a citizen of the United States,residing at Winthrop, county of Suffolk, State of Massachusetts, haveinvented an Improvement in Foun-` tain-Pens, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like numerals on the drawings representing like parts.

This invention has for its object to provide a novel device to be usedin connection with fountain-pens which will prevent the pen from leakingwhen it happens to be turned bottom side up and will also prevent thepen from sweating as it is called.

A pen which has my improvements applied thereto, therefore, is neverinky or soiled around that part of the holder with which the lingerscome in contact in writing. I accomplish this result by providing asupplemental cap which is adapted to be placed within the ordinary capof the pen, said supplemental cap having a pen-receiving pocket andbeing shaped at its end to enter and fit within the tapering end of thebarrel. Y

1Whenthe regular cap is provided with my improvements and is applied tothe penholder, the pen-point is inclosed withinf'the chamber ofA thesupplemental cap, and as the latter lits against the end of the holderwith a tight joint it is impossible for any ink to escape from thesupplemental cap into the ,main cap, thereby to soil the holder.

ln the drawings, Figure 1 is a sectional view through one end of afountain-pen, shlow- 41g. 2 is a side View of my improved cap, the maincap in which the supplemental cap is used being shown in dotted lines.

3 designates the holder of a fountain-pen, l the pen-point, and 5 thefeed-bar. These parts may be of any suitable or usual construction.

The form of holder herein shown has its pen end flared outwardly, as at6, thereby forming an annular recess or groove between the end of theholder and the pen proper, said flared-out portion having a lessdiameter than the interior diameter ofthe cap 7, -so that serai No.204.198. et) model.)

when the cap is on a space exists between the cap and the flange 6.Within the main cap 7 is a supplemental cap 8, which has the pocket orchamber 9 of a size to receive the pen-point 4 and is tapered at itsend, as Yat 10, to enter and lit within the flared portion 6 of theholder, as best seen in Fig. l. The supplemental cap 8 is entirelyindependent from the main cap 7 and, preferably, is of a size to closelylit within said main cap.

I prefer to provide the body of the holder with screw threads 12, withwhich interior screw-threads 13 on the main cap 7 engage when the cap isin place. The supplemental cap 8 preferably will iit within the main cap7 suiiiciently tight so that it will be held therein by friction. Theplacing of the main cap over the pen causes the supplemental cap toinclose the pen-point 4, and the screwing of said ,main cap onto thescrew-threaded portion 12 of the holder brings the tapered portion 10 ofthe supplemental cap hard against the interior of the flanged portion 6of the holder, thereby making an absolutely tight joint.

I f by accident the pen should be turned bottom side up when it is thusclosed, the ink cannot escape into the main cap, but will beheldentirely in the supplemental cap, and

therefore the portion 15 of the holder with vwhich the lingers contactin using the pen is kept perfectly dry.

There is a special advantage in making the supplemental cap with thetapering end 10, whichl enters within the flared portion 6 of theholder, or in so constructing the parts that the line of'contact betweenthe supplemental cap and the holder is on the interior of the holderrather than on its end. or its exterior, .because where the .line ofcontact is just on the interior the ink cannot by any possibility getover the edge 16 of the'holder end. There is also a special advantage inmaking the supplemen tal cap entirely independent from the main cap, forby sodoing said supplemental cap can have a very slight movement withinthe main cap sulicient to enable it to be properly centered when themain cap is applied tothe holder. It will be readily seen that Where thesupplemental cap vis rigid with the holder it might be difficult to geta tight joint allv the way around, as the supplemental cap might contactwith one side of the flared portion 6 before it did with the other.

20 designates a hole in the end of the cap 7, through which air may beblown or a small wire or other implement inserted to force thesupplemental cap 8 out of the main cap Whenever it is desired to removesaid supplementalcap.

My improvement'is such that it can be applied to almost any style of penby simply making the supplemental cap 8 of the proper shape and size tofit he interior of the cap of the pen and to ente xtwithin the end 6 ofthe holder. "'1" Iwish it understdY hatvarious changes in theconstructionan rrangement of the parts may be resorted to .withoutdeparting from the invention whichis expresssed in the appended claims.

Having described my invention, what Iv claim as new, and desire tosecure by Letters Patent, is

l. 1n afountain-pen, a holder provided with screw-th reads and havinganoutwardly-flared pen end, a main cap to cover said end, said cap havingscrew-threads to cooperate with the screw-threads on the holder, and asupplel mental cap separate and independent from the main cap andlocated entirely within the same within the main cap, said supplementalcap having a pocket or chamber to receive the pen-point and beingtapered at its end whereby when the main cap is applied to the holdersaid tapered end enters and centers itself against the interior of theflared portion of the holder.

2. In a fountain-pen having the usual holder,

and engage the flaring end of the holder and make a tight jointtherewith.

3. A non-leakable attachment for fountainpens having a holder with aflared end, comprising a non-perforated supplemental cap independentfrom .and adapted to be removably sustained entirely within the usualcap of the pen, said supplemental cap having achamber to receive thepen-point and a non-resilient tapered end to enter and iit against theiiared end of the holder.

1n testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

AUGUST EBERSTEIN.

